I thought we were discussing USB cables, then, out of the blue, you ask me about my opinion on HDMI cables, and essentially, my response is as above, that I have no 'view' at present, other than I'm open to the possibility that one might perform better than the other, even though I haven't seen this demonstrated yet, and that I might lack the calibre of visual gear to demonstrate it.
I don't remember expressing the opinion that you ascribe to me in the second paragraph. Where did this come from?
However, since you raised the subject, I'm also happy to admit the possibility that HDMI or USB cables might exhibit performance differences, even if the makers didn't design them to do so, and even if the makers can't see or hear those differences themselves.